The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 20, 2007
Filed:
Aug. 04, 2004
Charles Nicholls, Nepean, CA;
Steve Beaudin, Nepean, CA;
Daniel Badiere, Ottawa, CA;
Adrian J. Bergsma, Kanata, CA;
Mark N. Willetts, Ottawa, CA;
Charles Nicholls, Nepean, CA;
Steve Beaudin, Nepean, CA;
Daniel Badiere, Ottawa, CA;
Adrian J. Bergsma, Kanata, CA;
Mark N. Willetts, Ottawa, CA;
Nortel Networks Limited, St. Laurent, CA;
Abstract
The present invention provides a serrodyne architecture that is capable of operating at high frequencies. The architecture generally includes a coupler, a delay line, and a switching system. The delay line is coupled to a reflective port of the coupler. The switching system is coupled to the delay line at different points and is configured to selectively shunt those points on the delay line to change the effective electrical length of the delay line. The effective electrical length is changed throughout the period, corresponding to the amount the frequency of the input signal is shifted. In operation, an input signal is provided to an input port of the coupler, and an output signal is provided at the output port, wherein the input signal and the output signal vary by a translation frequency, which is controlled based on how the effective electrical length of the delay line is changed.